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From: Richard Henderson <richard.henderson@linaro.org>
To: "Claudio Fontana" <cfontana@suse.de>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Philippe Mathieu-Daudé" <philmd@redhat.com>,
	"Eduardo Habkost" <ehabkost@redhat.com>,
	"Peter Maydell" <peter.maydell@linaro.org>,
	"Alex Bennée" <alex.bennee@linaro.org>
Cc: Laurent Vivier <lvivier@redhat.com>,
	Thomas Huth <thuth@redhat.com>,
	Roman Bolshakov <r.bolshakov@yadro.com>,
	qemu-devel@nongnu.org
Subject: Re: [PATCH v22 16/17] i386: gdbstub: only write CR0/CR2/CR3/EFER for SOFTMMU
Date: Fri, 26 Feb 2021 07:07:46 -0800	[thread overview]
Message-ID: <53661a28-c85c-2773-af56-78f09b428924@linaro.org> (raw)
In-Reply-To: <870d6e44-da99-d962-2ce5-821c06a2b04d@suse.de>

On 2/26/21 1:22 AM, Claudio Fontana wrote:
>> I should think so, except...  that FORCE_64 makes the previous test useless.  I
>> have no idea what's going on here.
> 
> #ifdef TARGET_X86_64
> #define GDB_FORCE_64 1
> #else
> #define GDB_FORCE_64 0
> #endif
> 
> So for TARGET_X86_64, GDB_FORCE_64 is always 1.
> 
> Maybe the flags is there for when a cpu switches between modes? (32vs64 bit)?

But of course the only cpu that could switch is TARGET_X86_64.
So... as I said, I have no idea what's going on.

> I'll make a conservative patch that does not risk changing the behavior (at least in the intention).

Sure.


r~


  reply	other threads:[~2021-02-26 15:08 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-24 13:34 [PATCH v22 00/17] i386 cleanup PART 2 Claudio Fontana
2021-02-24 13:34 ` [PATCH v22 01/17] i386: split cpu accelerators from cpu.c, using AccelCPUClass Claudio Fontana
2021-02-25  1:23   ` Richard Henderson
2021-02-24 13:34 ` [PATCH v22 02/17] cpu: call AccelCPUClass::cpu_realizefn in cpu_exec_realizefn Claudio Fontana
2021-02-25  1:25   ` Richard Henderson
2021-02-24 13:34 ` [PATCH v22 03/17] accel: introduce new accessor functions Claudio Fontana
2021-02-25  1:26   ` Richard Henderson
2021-02-24 13:34 ` [PATCH v22 04/17] target/i386: fix host_cpu_adjust_phys_bits error handling Claudio Fontana
2021-02-24 13:34 ` [PATCH v22 05/17] accel-cpu: make cpu_realizefn return a bool Claudio Fontana
2021-02-24 13:34 ` [PATCH v22 06/17] meson: add target_user_arch Claudio Fontana
2021-02-24 21:21   ` Philippe Mathieu-Daudé
2021-02-24 22:35     ` Eric Blake
2021-02-24 22:53       ` Philippe Mathieu-Daudé
2021-02-25  7:16       ` Claudio Fontana
2021-02-24 13:34 ` [PATCH v22 07/17] i386: split off sysemu-only functionality in tcg-cpu Claudio Fontana
2021-02-25  1:30   ` Richard Henderson
2021-02-24 13:34 ` [PATCH v22 08/17] i386: split smm helper (sysemu) Claudio Fontana
2021-02-25  1:32   ` Richard Henderson
2021-02-24 13:34 ` [PATCH v22 09/17] i386: split tcg excp_helper into sysemu and user parts Claudio Fontana
2021-02-25  1:33   ` Richard Henderson
2021-02-24 13:34 ` [PATCH v22 10/17] i386: move TCG btp_helper into sysemu/ Claudio Fontana
2021-02-25  1:40   ` Richard Henderson
2021-02-24 13:34 ` [PATCH v22 11/17] i386: split misc helper into user and sysemu parts Claudio Fontana
2021-02-25  3:14   ` Richard Henderson
2021-02-24 13:34 ` [PATCH v22 12/17] i386: separate fpu_helper " Claudio Fontana
2021-02-25  3:28   ` Richard Henderson
2021-02-24 13:34 ` [PATCH v22 13/17] i386: split svm_helper into sysemu and stub-only user Claudio Fontana
2021-02-25  3:37   ` Richard Henderson
2021-02-24 13:34 ` [PATCH v22 14/17] i386: split seg_helper into user-only and sysemu parts Claudio Fontana
2021-02-25  3:57   ` Richard Henderson
2021-02-24 13:34 ` [PATCH v22 15/17] i386: split off sysemu part of cpu.c Claudio Fontana
2021-02-25  4:02   ` Richard Henderson
2021-02-24 13:34 ` [PATCH v22 16/17] i386: gdbstub: only write CR0/CR2/CR3/EFER for SOFTMMU Claudio Fontana
2021-02-25  4:19   ` Richard Henderson
2021-02-25  8:55     ` Claudio Fontana
2021-02-26  4:05       ` Richard Henderson
2021-02-26  9:22         ` Claudio Fontana
2021-02-26 15:07           ` Richard Henderson [this message]
2021-02-24 13:34 ` [PATCH v22 17/17] i386: move cpu_load_efer into sysemu-only section of cpu.h Claudio Fontana
2021-02-25  4:28   ` Richard Henderson
2021-02-25  9:02     ` Claudio Fontana
2021-02-24 14:12 ` [PATCH v22 00/17] i386 cleanup PART 2 no-reply
2021-02-24 22:54 ` Philippe Mathieu-Daudé

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